Vladimirova T. Double crystal X-ray diffractometery in diagnostics of single crystals with several types of microdefects of arbitrary sizes

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0400U003166

Thesis Registration Form

0400U003166.pdf

Applicant for

Specialization

  • 01.04.07 - Фізика твердого тіла

16-11-2000

Specialized Academic Board

Д26.168.02

Essay

The new theoretical model for description of full X-ray diffraction rocking curves (RC) that includes the vicinity of exact Bragg position has been developed. The model is based on generalizations of the X-ray diffraction dynamic theory for crystals with chaotically distributed Coulomb type defects made in this work. This generalizations lean upon considering the dynamic character of diffuse scattering (DS) in the course of analytical integration of DS over the Evald sphere, the account of the simultaneous presence of several types of defects with arbitrary sizes in the crystal, and also on tool factors of the elaborated X-ray optical scheme of the double crystal diffractometer. For RC recording in such cases, the high-resolution (triple-axis), four-circle, automated diffractometer was designed.

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